Means for detecting imperfections in yarn



y 8, 1934 c. LYTTON 1,958,197

MEANS FOR DETECTING IMPERFECTIONS IN YARN Filed Oct. 1, 1951 2 Sheets-Sheet 1- (f/zLE/v L Lyrm/l; INVENTOR.

ATTORNEY.

y 1934 c. LYTTON ,958,197

MEANS FOR DETECTING IMPERFECTIONS IN YARN Filed Dot. 1, 193

2 Sheets-Sheet 2 ULL'A Z, ZXTro INVENTOR.

ATTORNEY.

Patented May 8, 1934 UNITED STATES PATENT OFFICE MEANS FOR DETECTING IIVIPERFECTIONS IN YARN deceased Application October 1, 1931, Serial No. 566,193

7 Claims.

This invention relates to means adapted to be associated with spoolers, winders and various types of machines wherein yarn is prepared, such as the winding of yarn onto cones, spools, bobbins,

and the like, and the mechanism relates to means for detecting imperfections in the yarn, such as knots, tangles, slubs, gouts, fluffy places in thread, and in fact all manner of imperfections in the thread which cause the thread to have an in crease in the cross sectional area at a given point.

Heretofore, various devices in the nature of combs have been provided for arresting and detecting imperfections in thread, yarn and the like,but in all of these devices, so far as I am aware, the combs or other similar devices have been arranged above the line of travel of the yarn. Therefore, the advantages of be gained from my application of a comb to a different point are not apparent in the other devices, and in fact are not present.

It is an object of this invention to provide, in connection with winders, *spoolers, and the like, a comb device located below the line of travel of the yarn thru the machine so that not only will the cross sectional area of the yarn or thread at a given point operate the device by an increase in the cross sectional area, but also the weight of the yarn at a given point, due to a tangle or a knot or other imperfections which increases the weight of the yarn at a given point, will cause the yarn to be engaged by the comb and to be arrested and broken and therefore stop the machine, and in this way detects the imperfection in the yarn which would pass undetected in all other devices of which I am aware.

Some of the objects of the invention having been stated, other objects will appear as the description proceeds when taken in connection with the accompanying drawings, in which- Figure 1 is a side elevation with a portion thereof in cross section showing my invention applied to a, portion of the winding frame.

Figure 2 is a plan view of a portion of Figure 1;

Figure 3 is a cross sectional view taken along the line 33 in Figure 2;

Figure 4 is a plan View of my device adapted to be associated with a spooler frame;

Figure 5 is an end view of Figure 4 looking from the lower end thereof;

Figure 6 is a cross sectional view taken along the line 66 in Figure 4;

Figure 7 is a plan view of still another form of mydevice adapted to be associated with a spooler;

Figure 8 is an end view of Figure 7 looking from 5 the lower end thereof.

Referring more specifically to the drawings, the numeral 10 indicates a portion of the winder frame having thereon a shaft 11 which has pivoted thereon a hook member 12 whose hook 13 is adapted to be engaged by a fragment of trip iron 14, and integral with hook member 12 is a trigger 15 which has an eye 16 therein thru which the yarn 17 passes after passing thru the guide comprising the bracket 18 which has an upstanding transversely disposed portion 19 having secured thereto a guide member 20 which partially encases the weight washers 21 and 22 with a felt washer 23 therebetween rotatably mounted on pin 24. This member 18 has the portions 25, 26, 27, 28 and 29 integral with each 7 other, said portion 29 having a set screw 30 therein which is adapted to secure the entire member 18 on a shaft 32 secured in bracket 33.

A plate 34 integral with portion 19 is secured to portion 29 by means of a screw 35 and a 7 guide member 20 is secured by means of screw 37 and supported by a pin 36.

Plate 34 can be adjusted with relation to plate 29 to form a small slot thru which the thread passes.

All of the above described mechanism is conventional.

A detecting member or comb 40 is adjustably secured on plate 29 by means of a set screw 41 penetrating a slot 42 in the plate portion 40 of the comb and said comb has the upwardly projecting toothed portion 43 and is adjusted so that the pointed ends of the teeth are disposed slightly below the lower surface of the yarn 17 as it passes thru the machine under normal tension, but when an imperfection such as a knot or a gout or any other imperfections such as a fiuffy place in the thread indicated by reference character 45 occurs, the same will be engaged by the points of the comb. Not only will the imperfection 45 in the yarn 1'7 be engaged by the comb on account of the increased cross sectional area of thread, but in case of tangles and knots and other imperfections which are heavier than the usual thread or yarn at this particular point, it is seen that the increased weight will cause the imperfection to pull the yarn downwardly and insure that the imperfection will be engaged by thecomb.

In Figures 4, 5 and 6 there is shown a modified form of the invention which is adapted to be applied to spoolers and the like in which portion 50 of the spooler frame is shown in which a shaft 51 is mounted by the clamping action of bolts 52. On shaft 51 is mounted a clamping portion 53 of bracket 54 which clamping portion adjusts the device by means of a screw 55. The portion 54 has a laterally extending main guide rod 56 extending therefrom and is adapted to be rotated and adjusted in position by means of a set screw 57a. This main guide rod has secured thereon my invention in the form of comb 57 which is secured thereon by soldering or any other suitable means. In addition to the main guide rod 56 there is a plate 58 integral with the portion 54 of the bracket and secured above this plate is another plate 59 which is secured by means of a screw 60 so that the distance between plates 58 and 59 can be adjusted to form a small slot thru which the yarn 60 passes and this small slot causes the yarn to travel in a given path and is adjusted for various sizes of yarn.

In Figures 7 and 8 is shown another modified form of the invention which is also adapted to be used with spoolers and like machines which shows a shaft on which bracket 71 is adapted to be secured by a clamping portion 72 being held on bracket 71 and in clamping relation with a shaft 70 by means of a screw '73. This bracket portion '71 has a main guide rod 74 and two auxiliary guide rods 75 and 76, the main guide 74 and the auxiliary guide rod 76 being secured in adjusted position by means of set screws 77 and '78. Guide rod 76 has secured thereon my invention in the form of a comb 79 which projects upwardly and has the points of the teeth of the comb disposed slightly below the lower edge of the yarn as it travels thru the guide in normal position, but disposed high enough to engage imperfections 80 in the form of knots, tangles, slubs and the like so that when such imperfections occur in the thread and pass thru the device they will be engaged by the comb '79 and break the thread and, therefore, stop the machine in connection with the stop motion mechanism which is well known and which need not be described in this application.

In Figures 4 to 8 inclusive the position of the comb 57 or '79 as the case may be, is adjusted vertically by means of slight rotary movement being imparted to the guide rod 56 or '76 as the case may be, and when the guide rod is slightly rotated and adjusted in position by its associated set screw, it is seen that the position of the comb carried thereby is adjusted to a proper degree to catch imperfections in the thread and yet not to engage the thread when the cross sectional area is of proper dimension.

In the drawings and specification, there has been set forth a preferred embodiment of the invention, and although specific terms are employed, they are used in a generic and descriptive sense only and not for purposes of limitation, the scope of the invention being set forth in the appended claims.

' I claim:

1. A device for use with spoolers, winders and the like comprising a pair of spaced means for supporting the yarn for travel through the device, tension means for causing the yarn to maintain a normal line of travel between the two supporting means, a comb disposed between the supporting means and below the normal line of travel of the yarn and normally out of contact with the yarn but contacting and impaling protrusions on the yarn occupying a position below the normal line of travel of the yarn.

2. A device for use with spoolers, winders and the like for arresting longitudinal movement of the yarn when an imperfection occurs therein, comprising spaced supporting means over which the yarn travels, atoothed comb disposed between the supporting means and below the normal line of travel of the yarn and having its teeth extending upwardly and rearwardly with relation to the direction of travel of the yarn, the upper ends of the teeth of the comb being pointed and normally out of contact with the yarn but contacting and impaling the yarn when the weight of the yarn increases at a point therein to cause the yarn to sag into contact with the comb.

3. A device for use with spoolers, winders and the like, comprising means for supporting the yarn for travel in a given path, means for applying tension to the yarn, a comb disposed below the yarn and having its teeth extending upwardly and rearwardly with relation with the direction of travel of the yarn but engaging the yarn when a thick place therein causes the yarn to sag below its normal line of travel.

4. A device for use with spoolers, winders and the like, comprising a pair of spaced means for supporting the yarn for travel through the device, tension means for causing the yarn to maintain a normal line of travel, a comb disposed below the yarn and between the pair of the spaced means and having its teeth extending upwardly and rearwardly with relation to the direction of travel of the yarn, the upper ends of the teeth being normally out of contact with the yarn but engaging the yarn when a heavy place in the yarn causes it to sag into contact with the comb.

5. A device for use with spoolers, winders and the like, for arresting longitudinal movement of the yarn when an imperfection occurs therein, comprising spaced supporting means over which the yarn travels, a toothed comb disposed between the supporting means and below the normal line of travel of the yarn and having its teeth extending toward the yarn, the upper ends of the teeth of the comb being pointed and normally out of contact with the yarn but contacting and impaling the yarn when the weight of the yarn increases at a point therein to cause the yarn to sag into contact with the comb.

6. A device for use in spoolers, winders and the like, comprising means for supporting the yarn for travel in a given path, means for applying tension to the yarn, a comb disposed below the yarn and having its teeth extending toward the yarn and normally out of contact with the yarn but engaging the yarn when a thick place therein causes the yarn to sag belowits normal line of travel.

7. A device for use with spoolers, winders and the like, .comprising a pair of spaced means for supporting the yarn for travel through the device, tension means for causing the yarn to'maintain a normal line of travel, a comb disposed below the yarn and between the pair of spaced means and having its teeth extending toward the yarn, the upper ends of the teeth being normally out of contact with the yarn but engaging the yarn when a heavy place in the yarn causes it to sag into contact with the comb.

CULLEN L. LYTTON. 

